Socket & Slotted Fastener Manufacturing
West Special Fasteners is a trusted manufacturer of socket and slotted fasteners, offering a comprehensive range of industry-standard and bespoke socket screws.
With expertise in high-torque fasteners manufactured to ANSI, ASME, BS, DIN, and ISO standards, we provide precision-engineered solutions for critical industries, including offshore, defence, renewables, and industrial engineering.
Socket & Slotted Fastener Manufacturer in Sheffield
Based in Sheffield, UK, West Special Fasteners manufactures socket and slotted screws to customer drawings as well as industry standards. Our facility is equipped with advanced hot forging, CNC machining, and thread rolling capabilities, allowing us to produce custom and high-performance fasteners for critical applications.
We work with UK and EU-sourced materials, ensuring compliance with ISO 9001 certification and full traceability throughout the production process. Whether you need DIN 912 hex socket screws, ISO 4762 cap screws, or bespoke socket fasteners, we provide fastener solutions tailored to your requirements.
ISO 9001-certified processes
Our rigorous quality management system ensures that everything we produce meets the highest standards of quality and consistency.
UK and EU-sourced materials
We source our materials locally to guarantee safety, compliance, reliability, and sustainability.
Exotic alloy expertise
We specialise in materials designed to withstand the most challenging environments, such as seawater corrosion, chemical applications and extreme pressures.
Full traceability
Our manufacturing processes include comprehensive documentation, ensuring every component is traceable from raw material to finished product.
Our socket & slotted fastener range
We manufacture a wide range of socket and slotted fasteners, including standard and custom specifications.
Industry-standard socket & slotted screws
Socket Cap Screws & High-Torque Fasteners
- DIN 912 & ISO 4762 – Standard socket head cap screws designed for high-strength bolted connections.
- DIN 7984 – Low-profile socket cap screws for applications with limited clearance.
- DIN 6912 – Socket head screws with a reduced head height for compact assemblies.
- ASME B18.3 & ANSI B18.3 – American standard socket cap screws for industrial applications.
Socket Set Screws & Grub Screws
- DIN 913 & ISO 4026 – Plain-ended grub screws for secure fastening without protrusion.
- DIN 916 & ISO 4029 – Cup point set screws for strong locking in mechanical assemblies.
- DIN 914 & ISO 4027 – Cone point set screws, ideal for positioning and securing components.
- DIN 915 & ISO 4028 – Dog point set screws for precision alignment.
Socket Countersunk & Flat Head Screws
- DIN 7991 & ISO 10642 – Countersunk socket screws for flush surface applications.
- ISO 2009 – Precision flat head socket screws designed for aerospace and engineering applications.
Slotted Fasteners
- DIN 963 & ISO 2009 – Flat countersunk slotted screws for aesthetic and functional applications.
- BS 2470 & BS 4168 – British standard slotted screws for mechanical and industrial uses.
- ASME B18.6 & ANSI B18.6 – American standard slotted fasteners, ensuring compatibility with U.S. applications.
Custom socket & slotted screws
We manufacture bespoke socket and slotted screws to exact customer specifications, including
- Custom dimensions & thread profiles – Available in metric, UNC, UNF, BSW, and bespoke thread forms.
- Exotic and high-strength materials – Including stainless steel, titanium, Inconel, Duplex, and Super Duplex for extreme environments.
- Special coatings & finishes – Zinc plating, PTFE, phosphate coatings, and other treatments for enhanced performance.
Our custom socket and slotted fasteners have been used in critical applications worldwide, ensuring superior performance in marine, defence, aerospace, and high-performance engineering sectors.
Applications of our socket & slotted fasteners
Our socket and slotted fasteners are used in industries where precision, durability, and material integrity are essential.
Offshore and marine industries
Corrosion-resistant socket screws for subsea equipment, offshore platforms, and marine applications.
Construction and infrastructure projects
Our slotted fasteners are essential for bridges, tunnels, and large-scale construction projects, offering superior load-bearing capabilities.
Chemical plants and power generation
Exotic alloy socket screws designed for high-pressure, high-temperature, and corrosive environments in nuclear, chemical, and renewable energy sectors.
Renewable energy
Our socket screws are used in wind turbines and solar installations, designed to withstand environmental stresses.
Defence
High-strength socket fasteners for non-weapon military vehicles, naval vessels, and aircraft components.
Mining & heavy equipment
High-torque fasteners engineered for mining machinery, heavy-duty construction, and industrial automation.
Socket & slotted fasteners manufacturing capabilities
At West Special Fasteners, we provide precision-engineered socket and slotted fasteners, manufactured to meet the most demanding specifications.
Hot Forging
As one of the few UK manufacturers with hot forging capabilities, we produce high-strength socket and slotted screws for critical applications.
Advanced Machining & Threading
Our state-of-the-art manufacturing facility includes:
- Conventional, automatic, and CNC lathes – Precision machining for standard and custom fasteners.
- Hydraulic presses – High-pressure forming for specialised and bespoke socket screws.
- Thread rolling machines – Ensuring strong, high-precision threads with superior consistency.
- Drilling and milling machines – Producing complex designs and custom modifications.
- VMC with 4th axis – Advanced multi-axis machining for high-precision components.
Quality Control and Documentation
We ensure ISO 9001-certified production, with:
- Rigorous quality control checks at every stage.
- Full traceability, providing documentation for every batch.
99% On-Time Delivery
West Special Fasteners maintains a 99% on-time delivery record, ensuring your fasteners arrive exactly when needed. With an approximate 4-week lead time, we provide a reliable and efficient supply chain for your projects.
- Minimise project delays – Fast, dependable supply of custom and standard socket screws.
- Ensure operational efficiency – Keep defence, offshore, and heavy industry projects on schedule.
- Enhance reliability – Full traceability and compliance with industry regulations.
Unlike many competitors who experience frequent delays, we deliver on time, every time—without excuses.
Corrosion resistance
Enhanced durability
Ensuring Durability in Harsh Environments
West Special Fasteners supplied high-performance Super Austenitic Stainless Steel fasteners, essential for the durability and corrosion resistance of the roofs in Center Parcs’ subtropical swimming pools across the UK.
CONTACT US
Speak to an expert
Whether you have a question, want to explore collaboration possibilities, or require expert advice, we are here to assist you.
Phone
Location
Callywhite Ln, Dronfield, S18 2XR
///blues.trains.soup